Un-týdre

According to the Old English Dictionary:

es;

un-týdre

m. An evil growth, evil progeny, a monstrous birth :-- Ðanon untýdras ealle onwócon, eotenas and ylfe and orcneas, swylce gigantas (cf. Milton: Where nature breeds, Perverse, all monstrous, all prodigious things, Abominable, P. L. Bk. 2), Beo. Th. 222; B. 111. un-tydre